I explain how to assemble and operate Juno's Spinner using dodecahedron model.
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The parts of the Juno's Spiner are in the left. There are 12 outer elements (clear), 20 inner elements and 60 sets of rotational joints. |
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Pile up the element of two sheets and join together by rotational joint. A clear element should always be placed outside of model. |
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Assemble them in the state of being easy to hold elements. |
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Check whether an element moves smoothly. A clear element is in front of a blue element. |
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Add an element in the same way. |
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This photograph shows combined four sheets of elements. Please direct your attention that four elements are forming one loop. |
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You may understand the principle of transformation by operating a small number of element.. |
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Always be conscious of making a loop with four sheets of elements. |
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Four elements are surrounding a circle. |
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If model is extended, it turns out easily which next should be connected. |
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If you move model little bit, it tends to become flat automatically. |
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Assemble model where it extended as much as possible. |
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Look for the place where one loop will be formed if one element is added. Then, assemble this part you found. |
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We had assembled half of the model. |
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Don't get the top and bottom of elements mixed up. |
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Almost finished. |
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Finished. |
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When you shrink Juno's Spinner, bounce it in your hands gently. If you made mistake at top and bottom of elements, you wouldn't shrink it. |
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When you expand Juno's Spinner, hold opposite sides of outer elements. |
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Move your each hands away. |
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Twist your hands leave rotation of elements. |
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Left picture shows completely expanded Juno's Spinner. You can expand Juno's Spinner make use of centrifugal force too. |